She says the needles are 85 percent lignocellulose - a tough woody material.

她表示，针叶85%的成分都是质纤维，这是一种坚硬的质料。

Hardwoods used in BBQ smoke have lots of cellulose and lignin.

烧烤烟用的硬含有大量纤维和质。

Wood is made up of cellulose and lignin.

纤维和质组成。

Yeah, the cells, if you think of the walls of the cells, they make the tree strong and there are a couple of chemicals that make up these walls, cellulose and lignin.

是的，细胞，如果你想到细胞的壁，它们树强壮， 这些壁几种化学物质构成，包括纤维和质。

Well the fungi are important, even though they make something like 5% of the living things in the rumen, they can breakdown specific bonds between the lignin inside the cellulose.

真菌很重要， 尽管它们在瘤胃的活体占比只有大约5%，但它们能够分解纤维内部质之间的特定化学键。

All of the bonds in the molecules of cellulose and lignin that make up the wood contain energy, and some of them could be broken, releasing that energy.

构成的纤维和质分子的所有化学键都含有能量，其一些键可以被打破，从而释放出这些能量。